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  1. Annual report of Captain A.A. Humphreys, topographical engineers, in charge of Office of Explorations and Surveys, War Department, December, 1858.
    By: United States. - Humphreys, A. A. - Ives, J. C. - Pope, John. - Warren, Gouverneur Kemble,
    Publication info: Washington1859.
    Contributed by: Library of Congress
    BHL Collections: Library of Congress
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  2. Report upon United States Geographical surveys west of the one hundredth meridian,
    By: Wheeler, George M. - Humphreys, A. A. - Wright, Horatio Gouverneur, - Geographical Surveys West of the 100th Meridian (U.S.)
    Publication info: Washington [D.C.] :G.P.O.,1875-1889.
    Contributed by: University Library, University of Illinois Urbana Champaign
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